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Finding the Fourth Proportional to 505,815.88, 758,140.14 and 190,070.92

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Solution

The fourth proportional to 505,815.88, 758,140.14 and 190,070.92 is: 284,887.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,815.88 : 758,140.14 = 190,070.92 : x
  2. Step 2: Convert to fraction form
    505,815.88/758,140.14 = 190,070.92/x
  3. Step 3: Cross multiply
    505,815.88x = 758,140.14 × 190,070.92
  4. Step 4: Simplify right side
    505,815.88x = 144,100,393,898.73
  5. Step 5: Solve for x
    x = 144,100,393,898.73/505,815.88
  6. Step 6: Final answer
    x = 284,887.05

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.